Amputees Control Prosthetics Via Mobile App

Tara Butcher explains how a smartphone app lets her use a single prosthetic leg to run, hike, walk and even wear high heels. Before the new technology, she'd have to swap out specially-made prosthetics for each task. Dr. Bruce Hensel reports for the NBC4 News at 5 p.m. on Dec. 27, 2012.